Real time squinching? Hmmm. Not a bad idea. This would be very difficult, though. These screens are very temperamental and require viewers to be in an exact point (nintendo 3DS). Unless Uni implemented a head-tracking aspect to it, where the animations adjust to the position of the viewer in real time (same basic concept of squinching), but this would require each guest to wear a motion tracker near their eyes (glasses, hat, etc.) or for the system to have a facial recognition software with cameras.
Also, 3D screens have only - so far - supplied two images (one for each eye). Layering 4 or more (with glasses-free screens, no less) would take some work. However, I did read an article that Apple patented a 3D screen that allowed multiple people to view simultaneously and without glasses.
Is it possible to do real-time squinching? Yes. Difficult? Absolutely.